Claudio Ortolina
48 lines
1.2 KiB
Elixir
48 lines
1.2 KiB
Elixir
defmodule MusicLibraryWeb.LiveHelpers.Params do
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def parse_page(nil), do: 1
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def parse_page(page) when is_binary(page) do
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case Integer.parse(page) do
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{num, ""} when num > 0 -> num
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_ -> 1
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end
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end
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def parse_page(_), do: 1
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def parse_page_size(nil, _allowed, default), do: default
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def parse_page_size(page_size, allowed, default) when is_binary(page_size) do
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case Integer.parse(page_size) do
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{num, ""} when num > 0 ->
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if allowed == nil or num in allowed, do: num, else: default
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_ ->
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default
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end
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end
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def parse_page_size(_, _allowed, default), do: default
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def merge_pagination(params, url_params, total_entries, opts \\ []) do
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allowed = Keyword.get(opts, :allowed_page_sizes)
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default_page_size = params[:page_size] || 20
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page = parse_page(url_params["page"])
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page_size = parse_page_size(url_params["page_size"], allowed, default_page_size)
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params
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|> Map.put(:page, page)
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|> Map.put(:page_size, page_size)
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|> Map.put(:total_entries, total_entries)
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end
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def merge_query(params, query) do
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Map.put(params, :query, query)
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end
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def merge_order(params, order) do
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Map.put(params, :order, order)
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end
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end
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